Chicagoan Allegra Rosenberg, 17, has become a YouTube sensation, writing songs beloved by fans of Doctor Who, BBC Sherlock and other off-beat pop culture hits. We revist Jay Shefsky's profile. Watch music videos.

Chicago cop-turned-actor Dennis Farina died today at age 69. Watch web extra video of Farina from WTTW's archives.

Rogers Park Ald. Joe Moore, known as a progressive, is responding today to charges of ethical misconduct. A report issued by the city's legislative inspector general concludes an alderman engaged in theft and abuse of authority. Chicago Tonight first reported the story last night on our website and confirmed the alderman in question is the 49th ward's Joe Moore.Read an article.

The Chicago Public Schools have announced more layoffs. This round cuts more than 2,100 people, including 1,036 teachers -- half of whom are tenured. This reduction follows the June announcement of 855 layoffs. Eddie Arruza and his guests examine the latest round of cuts, and how it will impact students and the system’s $1 billion budget deficit. Read the CPS fact sheet.

Sen. Dick Durbin urges all law enforcement agencies to use the federal database resources to track guns found at crime scenes. Elizabeth Brackett has the story. Read Durbin's letter.

In the wake of Detroit filing for bankruptcy last week, we take a look at the possibility of Chicago following the Motor City into financial calamity. Is Chicago’s recent bond rating downgrade a sign of things to come? Or is the city in a totally different situation than Detroit? We have analysis.

A playwright uses the internet to develop a new script about the fight to build a suburban mosque. We get a preview of Mosque Alert by Silk Road Rising and Jamil Khoury. Watch a video and read an interview.

We take a look at Chicago's famous skyscrapers-- and the political deals that shaped them. Author Thomas Leslie joins us with more from Chicago Skyscrapers: 1871-1934. Read an interview.

We share what you had to say about Ald. Joe Moore caught in an ethics investigation and on the Better Government Association's hospital investigation in tonight’s Viewer Feedback.

The latest casualty in the state’s battle for pension reform is Chicago’s credit ratings. Moody’s Investors Service has bumped the city’s general obligation and sales tax ratings down three notches. We discuss what this triple downgrade means.

Wrigley Field redevelopment plans pass the Chicago Plan Commission with the support of Ald. Tom Tunney. Paris Schutz has the latest.

Jeanne Nolan left Winnetka as a teenager in 1987, frustrated with what she saw as an unhealthy materialism in everyday life. She joined a commune in California to learn organic farming, but eventually realized the commune, with cult-like leaders, was a dangerous place to be. Moving back in with her family 17 years later, without traditional job training, she turned her parents' backyard into an organic garden. She joins us. Read an interview with Nolan.